Dujiangyan irrigation system

Dujiangyan Irrigation System

The Du Jiang Yan Irrigation system was and still is a feat of engineering. Built in 256 BC it stopped annual flooding along the banks of the Min river and ensured the fame of Li Bing, the governor of Qin and engineer behind the project.

The irrigation system is incredible and consists of a levee and a channel cut through Mount Yulei which allows the flood water to be discharged to the Chengdu Plain. To cut the channel through Mount Yulei, Li Bing used a little trick – with gunpowder still a distant future invention, he alternately heated and cooled the rock until it cracked in order to carve out the channel. It took eight years! That is persistance.

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